21139934263

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1\times {\mathrm{67409}}^1$

素因数の和:68118

約数の個数: 16

約数和(自身を含む): 24539397120

約数和(自身を除く): 3399462857

約数列:

[1, 7, 71, 497, 631, 4417, 44801, 67409, 313607, 471863, 4786039, 33502273, 42535079, 297745553, 3019990609, 21139934263]

約数ペア:

[(1, 21139934263), (7, 3019990609), (71, 297745553), (497, 42535079), (631, 33502273), (4417, 4786039), (44801, 471863), (67409, 313607)]